Global Patent Index - EP 3125031 A4

EP 3125031 A4 20171206 - LIQUID CRYSTAL DISPLAY DEVICE

Title (en)

LIQUID CRYSTAL DISPLAY DEVICE

Title (de)

FLÜSSIGKRISTALLANZEIGEVORRICHTUNG

Title (fr)

DISPOSITIF D'AFFICHAGE À CRISTAUX LIQUIDES

Publication

EP 3125031 A4 20171206 (EN)

Application

EP 15768355 A 20150323

Priority

  • JP 2014063279 A 20140326
  • JP 2015059817 W 20150323

Abstract (en)

[origin: EP3125031A1] A liquid crystal display device comprising: a color filter layer; and a light-emitting device which comprises a light source and a color conversion layer containing a quantum dot , wherein the color filter layer at least comprises a blue color filter, a green color filter and a red color filter, the red color filter is formed from a red-coloring composition comprising a coloring agent (A R ), a binder (W R ) and a solvent (E R ) and meets the requirement represented by formula (Q1) : 0.1 ‰¤ F R × C R ‰¤ 1.0 [wherein F R represents the thickness (µm) of the red color filter; and C R represents the ratio of the amount of the coloring agent (A R ) to the total amount of the coloring agent (A R ) and the binder (W R ) in the red-coloring composition], the green color filter is formed from a green-coloring composition comprising a coloring agent (A G ), a binder (W G ) and a solvent (EG) and meets the requirement represented by formula (Q2) : 0.1 ‰¤ F G × C G ‰¤ 1.2 [wherein F G represents the thickness (µm) of the green color filter; and C G represents the ratio of the amount of the coloring agent (A G ) to the total amount of the coloring agent (A G ) and the binder (W G ) in the green-coloring composition], the blue color filter is formed from a blue-coloring composition comprising a coloring agent (A B ), a binder (W B ) and a solvent (E B ) and meets the requirement represented by formula (Q3) : 0.1 ‰¤ F B × C B ‰¤ 1.0 [wherein F B represents the thickness (µm) of the blue color filter; and C B represents the ratio of the amount of the coloring agent (A B ) to the total amount of the coloring agent (A B ) and the binder (W B ) in the blue-coloring composition], an emission spectrum of light emitted from the light-emitting device has a first emission peak, a second emission peak and a third emission peak, the wavelength (» 1 ) of the first emission peak ranges from 420 to 480 nm, the wavelength (» 2 ) of the second emission peak ranges from 500 to 550 nm, and the wavelength (» 3 ) of the third emission peak ranges from 580 to 650 nm.

IPC 8 full level

G02F 1/1335 (2006.01); G02B 5/20 (2006.01); G02F 1/13357 (2006.01); G03F 7/004 (2006.01)

CPC (source: EP KR US)

C09B 67/0033 (2013.01 - KR); G02B 5/201 (2013.01 - EP US); G02B 5/223 (2013.01 - EP US); G02B 6/005 (2013.01 - US); G02B 6/0229 (2013.01 - KR); G02F 1/133514 (2013.01 - EP KR US); G02F 1/133516 (2013.01 - EP US); G02F 1/13394 (2013.01 - KR); G03F 7/0007 (2013.01 - EP US); G03F 7/105 (2013.01 - EP US); G03F 7/2053 (2013.01 - EP US); G02F 1/133614 (2021.01 - EP US); G02F 2202/04 (2013.01 - EP US); G02F 2202/108 (2013.01 - EP US); G02F 2202/36 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3125031 A1 20170201; EP 3125031 A4 20171206; CN 106104371 A 20161109; CN 113253508 A 20210813; JP 6536569 B2 20190703; JP WO2015147312 A1 20170413; KR 102271784 B1 20210630; KR 20160138080 A 20161202; TW 201542368 A 20151116; TW I647103 B 20190111; US 10466396 B2 20191105; US 2017123120 A1 20170504; WO 2015147312 A1 20151001

DOCDB simple family (application)

EP 15768355 A 20150323; CN 201580015422 A 20150323; CN 202110426515 A 20150323; JP 2015059817 W 20150323; JP 2016510575 A 20150323; KR 20167027082 A 20150323; TW 104109426 A 20150324; US 201515128650 A 20150323